body {
    background: #ffffff;
}
.title{
    width: 100%;
    height: 80px;
    text-align: center;
}
.title h1{
    font-size: 30px;
    font-family: "Comic Sans MS", '幼圆', serif ;
}
.container {
    text-align: center;
}
.box {
    width: 70%; /* Updated width */
    margin: 40px auto;
    text-align: center;
    display: flex;
    flex-wrap: wrap;
    /*justify-content: center;*/
}
.common-container {
    margin-right: 25px;
}
/* 12 */
.btn-12{
    position: relative;
    right: 20px;
    bottom: 20px;
    border:none;
    box-shadow: none;
    width: 180px;
    height: 70px;
    line-height: 42px;
    -webkit-perspective: 230px;
    perspective: 230px;
    margin-top: 70px;
    margin-left: 30px;
    background: #ffffff;
}
.btn-12 span {
    background: #ffffff;
    background: linear-gradient(0deg, rgb(75, 225, 125) 0%, rgb(54, 215, 74) 100%);
    display: block;
    position: absolute;
    width: 180px;
    height: 70px;
    box-shadow:inset 2px 2px 2px 0px rgba(81, 225, 10, 0.95),
    7px 7px 20px 0px rgba(0,0,0,.1),
    4px 4px 5px 0px rgba(0,0,0,.1);
    border-radius: 5px;
    margin:0;
    text-align: center;
    line-height: 70px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    -webkit-transition: all .3s;
    transition: all .3s;
    font-family: "Comic Sans MS", '幼圆', serif ;
    font-weight: bold;

}
.btn-12 span:nth-child(1) {
    box-shadow:
            -7px -7px 20px 0px #fff9,
            -4px -4px 5px 0px #fff9,
            7px 7px 20px 0px #0002,
            4px 4px 5px 0px #0001;
    -webkit-transform: rotateX(90deg);
    -moz-transform: rotateX(90deg);
    transform: rotateX(90deg);
    -webkit-transform-origin: 50% 50% -20px;
    -moz-transform-origin: 50% 50% -20px;
    transform-origin: 50% 50% -20px;
}
.btn-12 span:nth-child(2) {
    -webkit-transform: rotateX(0deg);
    -moz-transform: rotateX(0deg);
    transform: rotateX(0deg);
    -webkit-transform-origin: 50% 50% -20px;
    -moz-transform-origin: 50% 50% -20px;
    transform-origin: 50% 50% -20px;
}
.btn-12:hover span:nth-child(1) {
    box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5),
    7px 7px 20px 0px rgba(0,0,0,.1),
    4px 4px 5px 0px rgba(0,0,0,.1);
    -webkit-transform: rotateX(0deg);
    -moz-transform: rotateX(0deg);
    transform: rotateX(0deg);
}
.btn-12:hover span:nth-child(2) {
    box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5),
    7px 7px 20px 0px rgba(0,0,0,.1),
    4px 4px 5px 0px rgba(0,0,0,.1);
    color: transparent;
    -webkit-transform: rotateX(-90deg);
    -moz-transform: rotateX(-90deg);
    transform: rotateX(-90deg);
}
